Garden aquarium



FIG. 1 is a perspective view of a garden aquarium showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left elevation view thereof;

FIG. 5 is a right elevation view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a top plan view thereof.

The elements shown in broken line illustrate portions of the garden aquarium form no part of the claimed design. 

CLAIM I claim the ornamental design for a garden aquarium, as shown and described. 